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Ecto JSON:API

EctoJsonapi is tool for dealing with JSON:API and Ecto schemas:

  1. EctoJsonApi.dump/1 Convert JSON:API v1.0 into Ecto friendly maps .
  2. EctoJsonApi.load/2 Convert Ecto schemas into maps structured like JSON:API v1.0.

Install into a Phoenix or other Elixir/Ecto application:

Add :ecto_jsonapi to your list of dependencies in mix.exs:

def deps do
  [
    {:ecto_jsonapi, "~> 0.2.0"},
  ]
end

Example/ Usage

Let's say you have the following Ecto schema data:

  user_with_credit_cards = %User{
  id: 1,
    name: "Micah Cooper",
    email: "[email protected]",
    credit_cards: [
      %CreditCard{
        id: 456,
        number: "4444 4444 4444 4444",
        expiration_date: "2018-02",
        cvv: "321",
        user_id: 1
      }
    ]
  }

You can convert user_with_credit_cards to JSON:API. Say you only want to return the User's email and you only want the expiration_date, and cvv from the CreditCard

 EctoJsonapi.load(user_with_credit_cards, 
   attributes: %{
     User => [:email],
     CreditCard => [:expiration_date, :cvv]
   } 
 )

Resulting in:

  %{
   "data" => %{
     "attributes" => %{
       "email" => "[email protected]"
     },
     "id" => 1,
     "relationships" => %{
       "credit-cards" => %{
         "data" => [
           %{"id" => 456, "type" => "credit_cards"}
         ]
       }
     },
     "type" => "users"
   },
   "included" => [
     %{
       "attributes" => %{
         "cvv" => "321",
         "expiration-date" => "2018-02"
       },
       "id" => 456,
       "relationships" => %{"user" => %{"data" => %{"id" => 1, "type" => "users"}}},
       "type" => "credit_cards"
     }
   ]
  }

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